org.springframework.web.servlet.view.document
Class AbstractPdfView

java.lang.Object
  org.springframework.context.support.ApplicationObjectSupport
      org.springframework.web.context.support.WebApplicationObjectSupport
          org.springframework.web.servlet.view.AbstractView
              org.springframework.web.servlet.view.document.AbstractPdfView

All Implemented Interfaces:

ApplicationContextAware, BeanNameAware, View

public abstract class AbstractPdfView

extends AbstractView

Abstract superclass for PDF views, using Bruno Lowagie's iText package. Application-specific view classes will extend this class. The view will be held in such a subclass, not a template such as a JSP.
See Expert One-On-One J2EE Design and Development by Rod Johnson, pp 571-575 for an example of use of this class.
NB: Internet Explorer requires a .pdf extension, as it doesn't always respect the declared content type.
Exposes page width and height as bean properties.

Version:

$Id: AbstractPdfView.java,v 1.8 2004/03/18 02:46:18 trisberg Exp $

Author:

Rod Johnson, Jean-Pierre Pawlak

Field Summary

Fields inherited from class org.springframework.context.support.ApplicationObjectSupport

logger

Constructor Summary

AbstractPdfView()
Sets the appropriate content type.

Method Summary

protected abstract void	buildPdfDocument(java.util.Map model, com.lowagie.text.Document pdfDoc, com.lowagie.text.pdf.PdfWriter writer, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Subclasses must implement this method to create an iText PDF document, given the model.
protected com.lowagie.text.Document	getDocument() Return a new com.lowagie.text.Document.
protected int	getViewerPreferences() Return the ViewerPreferences.
protected void	renderMergedOutputModel(java.util.Map model, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Subclasses must implement this method to render the view.

Methods inherited from class org.springframework.web.servlet.view.AbstractView

addStaticAttribute, getBeanName, getContentType, getStaticAttributes, render, setAttributes, setAttributesCSV, setAttributesMap, setBeanName, setContentType, setRequestContextAttribute

Methods inherited from class org.springframework.web.context.support.WebApplicationObjectSupport

getServletContext, getTempDir, getWebApplicationContext, requiredContextClass

Methods inherited from class org.springframework.context.support.ApplicationObjectSupport

getApplicationContext, getMessageSourceAccessor, initApplicationContext, setApplicationContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractPdfView

public AbstractPdfView()

Sets the appropriate content type. Note that IE won't take much notice of this, but there's not a lot we can do about this. Generated documents should have a ".pdf" extension.

Method Detail

renderMergedOutputModel

protected final void renderMergedOutputModel(java.util.Map model,
                                             javax.servlet.http.HttpServletRequest request,
                                             javax.servlet.http.HttpServletResponse response)
                                      throws java.lang.Exception

Description copied from class: AbstractView

Subclasses must implement this method to render the view.

The first take will be preparing the request: This may include setting the model elements as request attributes, e.g. in the case of a JSP view.

Specified by:

renderMergedOutputModel in class AbstractView

Parameters:

model - combined output Map, with dynamic values taking precedence over static attributes

request - current HTTP request

response - current HTTP response

Throws:

java.lang.Exception - if rendering failed

getDocument

protected com.lowagie.text.Document getDocument()

Return a new com.lowagie.text.Document.
By default return an A4 document, but the subclass can set anything else or retrieve from properties.

Returns:

the new created Document

getViewerPreferences

protected int getViewerPreferences()

Return the ViewerPreferences.
By default return AllowPrinting and PageLayoutSinglePage, but can be subclassed. The subclass can either fix the preferences or retrieve them from the bean properties.

Returns:

an int containing the bits information against PdfWriter definitions.

buildPdfDocument

protected abstract void buildPdfDocument(java.util.Map model,
                                         com.lowagie.text.Document pdfDoc,
                                         com.lowagie.text.pdf.PdfWriter writer,
                                         javax.servlet.http.HttpServletRequest request,
                                         javax.servlet.http.HttpServletResponse response)
                                  throws java.lang.Exception

Subclasses must implement this method to create an iText PDF document, given the model.

Parameters:

request - in case we need locale etc. Shouldn't look at attributes

response - in case we need to set cookies. Shouldn't write to it.

Throws:

java.lang.Exception